module Music
module Transcription
module Parsing

grammar NonnegativeFloat
  rule nonnegative_float
    [0-9]+ [.] [0-9]+ ("e" [+-] [0-9]+)? {
      def to_f
        text_value.to_f
      end
      
      alias :to_num :to_f
    }
  end
end

end
end
end